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The modulation and demodulation technique is the base of radio broadcast, as well as the information transmission and communication of modern computers. In physics, the modulation method has been applied to study the spectroscopy of semiconductors since the 1960s. Modulation spectrum, which is to measure small changes of sample under the periodic perturbation of external fields, can substantially increase the cont...

In his Nobel Prize lecture, Odd Hassel particularly referred that there are Cl···N charge-transfer interactions which was widely studied by scientists later in cyanuric chloride crystals. As can be seen in figure 1, the molecules of C3N3Cl3 are forming planar layers parallel to the ab-plane. Within the layers, each molecule is linked to six neighbor molecules by halogen bonds. Owing to its outstanding structure...

Sulphated metal oxides with both Br?nsted and Lewis acid sites are widely used as solid acid catalysts and/or supports in organic synthesis,transformation reactions,and NOx removal. As Br?nsted acid sites play a crucial role in both the anchoring other active components and in catalytic reactions,such a decrease would cause deteriorations the intrinsic properties of solid acid materials. The number of Br□? 2ns...

Ni/ZnO is an ideal adsorbent for the reactive adsorption desulfurization to produce oil products with ultra-low sulfur content. In this work, the RADS of a model oil n-nonane containing dibenzothiophene was conducted over a Ni/ZnO adsorbent.

A research group led by Prof. Zhi-Wu Yu in the Department of Chemistry, Tsinghua University has tried to seek the answer by investigating the phase behavior of the most important and widely used phospholipid, dipalmitoylphosphatidylcholine (DPPC). The results have been published on an American Chemical Society journal, Journal of Physical Chemical B, on June, 6 2011. Their strategy was to combine calorimetry and s...

Organic semiconductors have attracted widespread interests due to their promising applications in organic electronic devices such as organic panel displays and photovoltaic cells (OPVCs). In these devices, the molecular orientation and interfacial coupling, which are found to markedly affect the charge transfer process, determine the device performance. For example, lying-down orientation could improve the charge ...
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